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alsa-2023:2932
Vulnerability from osv_almalinux
Published
2023-05-16 00:00
Modified
2023-05-19 22:02
Summary
Important: edk2 security update
Details
EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM.
Security Fix(es):
- openssl: X.400 address type confusion in X.509 GeneralName (CVE-2023-0286)
- openssl: timing attack in RSA Decryption implementation (CVE-2022-4304)
- openssl: double free after calling PEM_read_bio_ex (CVE-2022-4450)
- openssl: use-after-free following BIO_new_NDEF (CVE-2023-0215)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
References
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"id": "ALSA-2023:2932",
"modified": "2023-05-19T22:02:30Z",
"published": "2023-05-16T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2023:2932"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2022-4304"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2022-4450"
},
{
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"url": "https://access.redhat.com/security/cve/CVE-2023-0215"
},
{
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"url": "https://access.redhat.com/security/cve/CVE-2023-0286"
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{
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"url": "https://bugzilla.redhat.com/2164440"
},
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"url": "https://bugzilla.redhat.com/2164487"
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{
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"url": "https://bugzilla.redhat.com/2164492"
},
{
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"url": "https://bugzilla.redhat.com/2164494"
},
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"type": "ADVISORY",
"url": "https://errata.almalinux.org/8/ALSA-2023-2932.html"
}
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"summary": "Important: edk2 security update"
}
CVE-2022-4304 (GCVE-0-2022-4304)
Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2025-11-04 19:14
VLAI?
EPSS
Title
Timing Oracle in RSA Decryption
Summary
A timing based side channel exists in the OpenSSL RSA Decryption implementation
which could be sufficient to recover a plaintext across a network in a
Bleichenbacher style attack. To achieve a successful decryption an attacker
would have to be able to send a very large number of trial messages for
decryption. The vulnerability affects all RSA padding modes: PKCS#1 v1.5,
RSA-OEAP and RSASVE.
For example, in a TLS connection, RSA is commonly used by a client to send an
encrypted pre-master secret to the server. An attacker that had observed a
genuine connection between a client and a server could use this flaw to send
trial messages to the server and record the time taken to process them. After a
sufficiently large number of messages the attacker could recover the pre-master
secret used for the original connection and thus be able to decrypt the
application data sent over that connection.
Severity ?
No CVSS data available.
CWE
- timing based side channel attack
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
Date Public ?
2023-02-07 00:00
Credits
Hubert Kario from RedHat
Dmitry Belyavsky from RedHat
Hubert Kario from RedHat
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CVE-2023-0215 (GCVE-0-2023-0215)
Vulnerability from cvelistv5 – Published: 2023-02-08 19:03 – Updated: 2025-11-04 19:14
VLAI?
EPSS
Title
Use-after-free following BIO_new_NDEF
Summary
The public API function BIO_new_NDEF is a helper function used for streaming
ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the
SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by
end user applications.
The function receives a BIO from the caller, prepends a new BIO_f_asn1 filter
BIO onto the front of it to form a BIO chain, and then returns the new head of
the BIO chain to the caller. Under certain conditions, for example if a CMS
recipient public key is invalid, the new filter BIO is freed and the function
returns a NULL result indicating a failure. However, in this case, the BIO chain
is not properly cleaned up and the BIO passed by the caller still retains
internal pointers to the previously freed filter BIO. If the caller then goes on
to call BIO_pop() on the BIO then a use-after-free will occur. This will most
likely result in a crash.
This scenario occurs directly in the internal function B64_write_ASN1() which
may cause BIO_new_NDEF() to be called and will subsequently call BIO_pop() on
the BIO. This internal function is in turn called by the public API functions
PEM_write_bio_ASN1_stream, PEM_write_bio_CMS_stream, PEM_write_bio_PKCS7_stream,
SMIME_write_ASN1, SMIME_write_CMS and SMIME_write_PKCS7.
Other public API functions that may be impacted by this include
i2d_ASN1_bio_stream, BIO_new_CMS, BIO_new_PKCS7, i2d_CMS_bio_stream and
i2d_PKCS7_bio_stream.
The OpenSSL cms and smime command line applications are similarly affected.
Severity ?
No CVSS data available.
CWE
- use-after-free
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
Date Public ?
2023-02-07 00:00
Credits
Octavio Galland (Max Planck Institute for Security and Privacy)
Marcel Böhme (Max Planck Institute for Security and Privacy)
Viktor Dukhovni
Matt Caswell
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CVE-2023-0286 (GCVE-0-2023-0286)
Vulnerability from cvelistv5 – Published: 2023-02-08 19:01 – Updated: 2025-11-04 19:14
VLAI?
EPSS
Title
X.400 address type confusion in X.509 GeneralName
Summary
There is a type confusion vulnerability relating to X.400 address processing
inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but
the public structure definition for GENERAL_NAME incorrectly specified the type
of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by
the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an
ASN1_STRING.
When CRL checking is enabled (i.e. the application sets the
X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass
arbitrary pointers to a memcmp call, enabling them to read memory contents or
enact a denial of service. In most cases, the attack requires the attacker to
provide both the certificate chain and CRL, neither of which need to have a
valid signature. If the attacker only controls one of these inputs, the other
input must already contain an X.400 address as a CRL distribution point, which
is uncommon. As such, this vulnerability is most likely to only affect
applications which have implemented their own functionality for retrieving CRLs
over a network.
Severity ?
No CVSS data available.
CWE
- type confusion vulnerability
Assigner
References
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
Impacted products
Date Public ?
2023-02-07 00:00
Credits
David Benjamin (Google)
Hugo Landau
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CVE-2022-4450 (GCVE-0-2022-4450)
Vulnerability from cvelistv5 – Published: 2023-02-08 19:04 – Updated: 2025-11-04 19:14
VLAI?
EPSS
Title
Double free after calling PEM_read_bio_ex
Summary
The function PEM_read_bio_ex() reads a PEM file from a BIO and parses and
decodes the "name" (e.g. "CERTIFICATE"), any header data and the payload data.
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populated with pointers to buffers containing the relevant decoded data. The
caller is responsible for freeing those buffers. It is possible to construct a
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could be exploited by an attacker who has the ability to supply malicious PEM
files for parsing to achieve a denial of service attack.
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OpenSSL 3.0.
The OpenSSL asn1parse command line application is also impacted by this issue.
Severity ?
No CVSS data available.
CWE
- double-free
Assigner
References
Impacted products
Date Public ?
2023-02-07 00:00
Credits
CarpetFuzz
Dawei Wang
Marc Schönefeld
Kurt Roeckx
Matt Caswell
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Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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